Axel Christian Zetlitz Sømme (April 19, 1899 – July 14, 1991) was a Norwegian geographer, political activist, magazine editor and newspaper editor.
He was born in Stavanger, Norway. He attended Stavanger Cathedral School (1917). He was cand.philol. of thje University of Oslo (1924). As a student he was politically active in the Mot Dag movement, and edited the magazine Mot Dag in 1921. He was the first editor of the newspaper Rjukan Arbeiderblad. In this position he was sentenced to 30 days imprisonment for publishing articles encouraging the 1924 military strike.
He was appointed professor at the Norwegian School of Economics from 1948 to 1969. Among his most important scientific works is Jordbrukets geografi i Norge (published in two volumes, 1949 and 1954).